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Control Volume Recommended dimensions and settings

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Old   October 22, 2013, 23:21
Default Control Volume Recommended dimensions and settings
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Andres Felipe Yepes Trespalacios
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i'm a aeronautical engineering student and i'm trying to replicate the article set below (Aerodynamic study of theater ballistic missile target i'm doing exactly the same conditions except the mesh, that's because i'm a beginner in ANSYS- fluent and i'm meshing with the tool of the module fluid-flow-fluent. i'm trying to make a non-structural mesh with a cylindrical volume control. when i run the simulation, the calculation diverge and some kind of warnings appears (temperature limited to 5e+3 in # of cells on zone 2 or pressure limited to 1e+0, also something like high exchanges of temperature or something like that).

i blame the mesh but his quality is good, (skewness around 0.94) and blame too the volume control dimensions.

what can i do?, try to make the volume control more bigger? how much? or it's something wrong with the model or the simulation settings?

i'm using spalart-allmaras and the same values of pressure and temperature of the article (mach number=2, P=23424.3 To=293.8). i'm using a half of the body, with a pressure farfield on all the boundary conditions, except, of course, the symmetry wall and the missile walls.

Thanks so much for any suggestion.
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